Pantographic apparatus for use of sculptors.



- 3. ETTLB PANTOGBAPHIO APPARATUS FOR USE OF SGULPTORS.

APPLIOATION FILED NOV.17, 1911.

-L3?A6Z Patented Sept. 3,1912.

a HQ l -iz llllllHU I IIIIIIIHH MH A I l Unites]; sat res PATENT, orator JOHN ETTL, F LEONIA, NEW JERSEY.

PANTOGRAPHIC APPARATUS FOR USE OF SGULP'IORS.

Y Specification of Letters Patent.

Patented Sept. 3, 1912.

Application filed November 17, 1911 Serial No; 660,765.

To all whom, it may concern:

' Be it known that I, J OHN Em, a citizen of the United States, residing at Leonia, in the county of Bergen and State of New J ersey, have invented certain new and useful Improvements in Pantographic Apparatus for Use of Sculptors, of which the following is a specification.

My improvements relate to means for re-,

producing statuary, &c., either upon the same, or an enlarged or reduced scale, as

- maybe desired, and the main object is to afford a simple but effective apparatus which may be manipulated with convenience and accuracy;

The-invention consists in the specific con-' struction and arrangement of parts herein described and claimed, whereby I attain un-' restricted"scope and space both vertically and horizontally, and free and unrestricted access to all sides and parts of the model and work, as hereinafter fully set forth..

Inthe accompanying drawings, Figure 1, is a sectional elevation showing the essential features of my improved apparatus; Fig. 2, is a' sectional detail of one of the indicators; and Fig. 3, a detail showing the ball and socket fulcrum. I f

An important desideratum in apparatus of this character, and one not herebefore attained in the art in so far as I am aware, is

perfect and unrestricted accessibility to both model and work not only from above or vertically, but also on. all sides, or horizontally in all directions. Furthermore both model and work should be accurately centralized with relation to their axes of rotation and with relation to. each other and all parts should move synchronously and proportionately in order to attain perfectly accurate results. To attain these advantages I provide two turn tables A, B, rotatable upon and with axial spindles, a, b, which are connected by any suitable mechanical expedient which will insure their movement in unison, as by means of the bevel gears 1, 2, 3 and/1 and the transmitting shaft 5, shown in Fig.1. Y

While it is obvious that the apparatus may be used either simply for copying, or for enlarged or reduced reproductions, it is used in a majority of cases for the production of enlargements from a relatively small model, and for this reason I have in the present case, as a matter of convenience,

designated the larger turn table A, as the work table andthe smaller turn table B, as the'model holder. The larger or work table A, is provided on its under side With an annular grooved bearing piece a, concentric with the spindle a, and fitting over a correspondingly grooved and concentricbearing a supported upon a suitable platform or frame work a The work turn table A, really rests upon -a series of anti-friction rollers interposed in and between the grooved annular bearings a, and 0: as, indicated m'Fig. 1. The spindle a, is'secured rigidly to the work table A, as is also the miter gear 1. The pattern or model table B, is arranged at a prescribed distance from the axis of the work table A, dependent upon the size of reproduction desired. The spindle b, is mounted in'such manner as to be vertically adjustable by any suitable means. Thus in the-drawings said spindle is shown as provided with an adjustable col- .lar b, resting upon the upper end of the bearing sleeve 6 supported upon suitable arms 6 b In Fig. 1, the parts are set, by way of illustration, forjan enlargement equivalent approximately to ten to one, and the model table B, is raised so asto bring the medial horizontal line w, of the model into coincidence with that of the desired reproduction to be erected on'the Work table A. The

lines y and 2, represent respectively the ex treme' upper and lower limits of the scope of reproduction thus provided for.

What may be designated as the proportional or pantographic compass beam P, is

supported at orvnear one extremity, (that nearest the pattern turn table B,) on a universal or ball and socket joints, situated, in the illustration given in Fig. 1, a distance from the axial center of the table B, equivalent to one tenth-the distance between said-axial center and that of the work table A. The pointers or indicators 71, are pivotally mounted at corresponding distances apart, onthe pantographic beam'P, their pivotal supports 7), p being arranged substantially in line vertically with the axes of the model table B, and of the work table A, respectively. These pivotal supports 12,

' p are situated on bracket arms 17 19 which are adjustably mounted upon the pantographic beam P, which latter is preferably of square or other polygonal form in cross ing jaws p,

section. As shown in-the' drawings the bracket arms p 70 are formed with clamp- (see Fig. 2) by which they may I "n a prescribed position on the beam P, or other mechanical expedients'ma'y be secured be resorted to for the purpose withlike result. The upper extensions-2' 2', of the indicators 2", i beyond the pivotal supports are coupled together by a connecting rod 0, pivotally connected with said upper extensions z' ,z' so that the indicators 11', 2' necessarily move in unison during-'use,'

saidindicators 2', 2' being made of proportional relative lengths as measured from their pivotal supports 7),- p In this connee-tion it may be stated that the indicators i, 5 may consistpf light but rigid rods adjustable in tubular shanks i 2' extending below the pivotal supports p, 39 and held in place by set screws 2', z'*, or equivalent means,- as may be found most egrpedient the said indicators, shanks and upper extensions constituting virtually rock levers pivotally supported onthe pantographic beam and controlled to movein unison by the con-- connecting rod and insuring the proper parallelism of the indicators 2', i

As before stated the pantographic beam P,,is fulcrumed at or near one extremity by a ball andsocket joint 3, the ball being attached to the lower end of'a rod. '8',.which is.

adjustable in a bearingsle'eve s attachedto the clamp 8 The ball is held to its seat by springs s 8', (seegFig; 3) of sufficient tensile strength to prevent accidental displacement; andthc pantographic beam P, is further supported by a counterweight w, through the medinm of a suspender w, .pass-- ing' over suitable pulley supports w, fw at tached to stationary parts suitably situated above the apparatus 'to afiord ample scope for the free and convenient manipulation thereof. By this construction and arrange-' ment of parts it is obvious that the pantographic beam-P, may be raised or lowered vertically or inclined and turned at any an g'le transversely practically from a vertical to a horizontal position. 1 That is to say the ball rod 8, may be inclined in any direction from and above a horizontal plane central with relation to the ball and socket or so called! universal joint, and hence access is aiforded to any and all portions of the model and work above the planes ofthe respective tables. Furthermore the scope of the apparatus is absolutely free, unlimited and unobstructed above add on all sides, it being only necessary to make and. adjust the parts unison with the feeler z".

versed with like result. I What I claimas my invent on and desire with relation to each other in accordance with the size, scope and requirements of the work to be done. I

It is'to be notedthat in my construction; and arrangement of parts as distlnguished from therprior state of the art, provision is made for supporting both the pattern or model and the work axially upon the horizontal turn tables, and that the pantographic beam is supported vertically above said turn-tables and may be manipulated on either side thereof, so that both tables and feeling and indicating mechanism may be moved with'relat-ion to. each other in such manner as to render every partof the model and work, no matterhow delicate or intri-.

cate, fully-and conveniently accessible; also that the indicators are pivot-ally-mounted upon the pantographic beam, and while moving in unison have afreedom and adaptability not heretofore attained; and that the apparatus, cons dtredas a whole is simple of structure andmanipulation, and free from the objection of being "in its own way i. 6., in that it has no parts that inter fere with'or obstruct the freedom 'or scope of action of other parts,

It is to be, understoodthat apparatus I is designed solely for the use of sculptors and their assistants in the plastic reproduction of relief work,'either enlarged or reduced, from 'a model; In producing an enlargement the'small model is centered and secured-upon the turntable B, and a suitable basic frame work is built uponand' secured to the work turn table A,'-said basic frame work being covered with a suitable layerof plastic material whichis built up and mold- .ed according to measurements, transmitted from I the pivoted feeling indicator 2", through the medium of the connecting rod 0, to the pivoted indicator 11 whicht'ravels in If a reduction is required the operation is essentially reto secure by Letters Patent is,

1. In apparatus or the character desig- ,nated, the combination of a; model turn table, and awork turn-table, {connecting means adapted to cause them to rotate synchronously, a pant'ographic-"beam"mounted pantographic beam, =a"co unterweighted sus above said turn-tables,; a ball "and socket oint supporting one extremity of said g said pantographic beam, indicators pivotally mountedon'said'pantographic beam,

and a connecting "rod-"pivotally attached to said indicators, for the purpose and substantially in the manner set forth. p I

2. In apparatus of the character designated, the combination of a model turntable, means for adjusting the same verti-' sally, a work turn-table, connecting means adapted to cause said turn-tables to rotate synchronously, a pantographic beam mounted above said turn-tables, a ball and socket joint supporting one extremity of said pantographic beam, a co'unterweighted suspender supporting the other extremity of said pantographic beam, indicators pivotally mounted on said pantographicv beam, and a connecting rod pivotally attached to said indicators, for thcpurpose and ,substantially in the manner set forth.

3. In apparatus of the character designated, the combination of a model turn-" table, a work turn-table, a transmitting shaft and gearing connecting said turntables and adapted to cause them to rotate synchronously, a pantographic beam mounted above said turn-tables, a ball and socket joint supporting one extremity of said pantographic beam, a counterweighted suspender supporting the other extremity of said pantographic beam, indicators pivotally mounted on said pantographic beam, and a connecting-rod pivotally attached to said indicators, for the purpose and substantially in the manner set forth.

4:. In apparatus of the character desig-' nated, the combination of a model turntable, and a Work turn-table, connecting means adapted to cause said tables to rotate synchronously, a pantographic beam mount ed above said turn-tables, a ball and socket joint supporting one extremity of said pantographic beam, a counterweighted suspender supporting the other extremity of said pantographic beam, adjustable bracket arms on said pantographic i pivotally mounted on said bracket arms, and a connecting rod pivotally attached to said indicators, for the purpose. and substantially in the manner described.

5.-In apparatus of the character designated, the combination of a model turntable and a Work turn-table, connecting means adapted to cause said tables to rotate synchronously, a pantographic beam mounted above said beam, indicators being of angular cross section, a ball and socket joint supporting one extremity of said pantographic beam, a counterweighted Suspender supporting the other extremity of said beam," formed with clamps forsecuring the bracket arms adjustably on said beam, indicators pivotally mounted on said bracket arms, and a connecting rod pivotally indicator, for the purpose and substantially in the manner described.

6. In apparatus of the character designated, the combination of a model turntable, and a Work turn-table, connecting 'means adapted to cause said tables to rotate synchronously, a pantographic beam mounted above said turn-tables, a ball and socket joint supporting one extremity of said pantographic beam, Suspender supporting the said pantographic beam,

other extremity of pivotally mounted on said bracket arms, a :connecting rod pivotally attached to said indicators, an intermediate bracket arm on said beam, and a supporting rod pivotally connected With said intermediate bracket arm and said connecting rod, for the purpose and substantially in themanner set forth.

7. In apparatus of the character desiga counterweighted adjustable bracket arms on said pantographic beam, indicators bracket armsvon said beam attached to said nated, the combination of a model turntable, and a Work turn-table, connecting means adapted to cause them to rot-ate synchronously, a pantographic beam mounted above said turn-tables, a ball and socket joint supporting one extremity of saidpantographic ,beam, a counterweighted suspendersupporting the other extremity of said pantographic beam, and indicators pivotally mounted on said pantographic beam, for the purpose and substantially in the manner set forth. a

JOHN ETTL. Witnesses: Gno. WM. MIATT,

turn-tables, said beam LILLIA MIATT. 

